package collection;

import java.util.ArrayList;
import java.util.List;

public class SubListDemo {
    public static void main(String[] args) {
        List<Integer> list=new ArrayList<>();
        for(int i=0;i<10;i++){
            list.add(i*10);
        }
        System.out.println(list);
        //含头去尾
        List<Integer> subList=list.subList(3,8);
        System.out.println(subList);

        //将子集扩大10倍
        for (int i=0;i<subList.size();i++){
            subList.set(i,subList.get(i)*10);
        }
        System.out.println(subList);

        list.set(3,1000);
        //修改原集合时,子集也会跟着改变
        System.out.println("list:"+list);
        System.out.println("subList:"+subList);

        list.remove(0);
        System.out.println("list:"+list);
        //原集合长度修改后,子集将不能再进行任何操作,操作则发生异常,但可以重新获取子集
        //System.out.println("subList:"+subList);//运行时发生不支持修改异常


    }
}
